Fujii Shinya, Kawawa Yoko, Horiguchi Shinichiro, Kamata Noriko, Kinoshita Toshibumi, Ogawa Toshihide
Division of Radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan.
Radiat Med. 2008 May;26(4):244-7. doi: 10.1007/s11604-007-0214-7. Epub 2008 May 29.
Low-grade fibromyxoid sarcoma (LGFMS) is a rare tumor that commonly arises in the lower extremities but rarely in the mesentery. We report computed tomography (CT) and magnetic resonance imaging (MRI) findings of LGFMS of the small bowel mesentery. On CT, the mass was composed of two components. One component, on its right side, appeared to have isointense attenuation relative to muscle, whereas the other component, on its left side, appeared to have low attenuation. On MRI the mass on the right side showed hypointensity similar to muscle on both T1-and T2-weighted images as well as mostly slight enhancement on contrast-enhanced T1-weighted images. On the other hand, the mass on the left side showed relative hypointensity on T1-weighted images and hyperintensity on T2-weighted images as well as intense enhancement on contrast-enhanced T1-weighted images, suggesting that the tumor contained myxoid tissue. The myxoid area of LGFMS may have a tendency to reveal intense enhancement on contrast-enhanced images.
低度纤维黏液样肉瘤（LGFMS）是一种罕见肿瘤，通常发生于下肢，很少见于肠系膜。我们报告了小肠系膜LGFMS的计算机断层扫描（CT）和磁共振成像（MRI）表现。CT上，肿块由两个部分组成。右侧部分相对于肌肉呈等密度衰减，而左侧部分呈低密度衰减。MRI上，右侧肿块在T1加权像和T2加权像上均表现为类似于肌肉的低信号，在对比增强T1加权像上大多呈轻度强化。另一方面，左侧肿块在T1加权像上呈相对低信号，在T2加权像上呈高信号，在对比增强T1加权像上呈明显强化，提示肿瘤含有黏液样组织。LGFMS的黏液样区域在对比增强图像上可能有明显强化的倾向。
